Answer: look down
Explanation: humans...humans...and did i say humans?
:D
Answer:
b.
but i am not sure
Explanation:
The purpose of hypothesis testing is to test whether the null hypothesis (there is no difference, no effect) can be rejected or approved. If the null hypothesis is rejected, then the research hypothesis can be accepted.
Answer:
Water is neutral, lemon is acidic, soda water is acidic, (I don't know what you said the toothpaste pH is), lime water is acidic
Explanation:
Acid: 1-6
Neutral: 7
Base: 8-14
<span>What most distinguishes noise from music is the presence
of Regularity. Both of these relate to human power of hearing, the difference
is that music is an arranged form of sounds which appeals to the aesthetic
sense of human being while noise is a series of sounds with no regularity or
harmony in it. Music and noise both have their good side as well as bad, with a
common fact that any of them can be harmful for human ear when it is at a very loud
frequency. </span>
